OCR Text |
Show 264 MR. P. S. ABRAHAM ON THE [Mar. 6, Rhinophores clavate, short, stout, with about 19 laminae, and retractile within unmarginated cavities which are situated close together and very far forward. Branchiae 8, the last two arising from the bases of their neighbours, short, stout, imperfectly tripinnate, retractile in a common transversely broad cavity, with the short, broad, tubular, triangular anus, which is apparently independently retractile within a small cavity, between the two hindermost plumes. Foot oblong, rounded in front, acuminate behind ; anteriority there is a shallow transverse groove, between the laminae of which passes centrally the nodular proboscis : both laminae are notched in the middle ; and the anterior one sends a small bilobed expansion round, and in front of, the proboscis : the posterior end of the foot extends rather beyond the mantle. Colour of the spirit specimens dark bluish grey, closely mottled with black ; the extreme margin of the mantle and the border of the foot are yellowish ; and the tips of the rhinophores pale grey. Underneath, the mottling is nearly obsolete. Length (in spirit) nearly 30 millims., breadth 16, height 11. Hab. ? This species is probably closely allied to D. limbata of Cuvier. DORIDOPSIS FUMEA, sp. nov. (Plate XXX. figs. 31, 32.) Body oblong, rounded at both ends, subdepressed, soft, semi-transparent. Mantle semigelatinous, rather puckered above into flat, irregular, indistinct pustules ; but very little of the rather fleshy and wavy border is free. Rhinophores short, stout, clavate, slightly kneed in front, the upper portion with diagonal laminae proceeding from an anterior small longitudinal ridge; the pedicles are marked with annular striae ; they are retractile in cavities with the margins produced into very short, nearly smooth sheaths, situated near together and very far forward. Branchiae 8, rather slender and short, situated around the anus in a transverse ellipse, interrupted behind ; the broad, tubular, fimbriate anus is independently retractile ; and the whole system is withdrawable into a fleshy-edged common mantle-cavity, placed very far back. Foot oblong, broad, rounded in front and behind ; the anterior border is thickened ; and through the centre passes the lenticular proboscis ; in front of the latter lies a small bilobed expansion from the foot-border. Colour of the spirit specimen clear grey, with here and there irregular smoky spots or freckles; a narrow smoky border extends all round next to the greyish-yellow extreme mantle-edge. The rhinophores are smoky, with the tips light; the branchiae have dark pinnulae, and a yellowish tinge near the roots; the anterior part of the foot also shows an indistinct yellowish tinge. Length (in spirit) 40 millims., breadth 22, height 9. Dab. -V DORIDOPSIS FCEDATA, sp. nov. (Plate XXIX. fig. 22.) Body oblong, elliptic, rather convex, with the sides high. Mantle fleshy, soft, minutely and indistinctly tuberculate on the back, much |